IRS calculators get workout: What’s the back interest on $18 million?

Three executives of Rosenbaum-Cunningham International—a West Palm Beach maintenance company serving such restaurant chains as the House of Blues, Hard Rock Café and Planet Hollywood—have been indicted for defrauding the federal government out of $18 million in employment taxes from 1999 to 2007.

The executives allegedly hired illegal immigrants and paid them in cash.